SA135 GR. B Pipes & Tubes Manufacturer & Supplier - USA Piping Solution

USA Piping Solution is a significant national provider of SA135 GR. B Pipes & Tubes. These tubular products are manufactured according to the ASTM A135 / ASME SA135 standard, which specifically covers Electric Resistance Welded (ERW) steel pipe. Grade B within this standard designates a higher strength carbon steel compared to Grade A. We maintain considerable inventory across the United States, ensuring reliable access to certified SA135 GR. B Pipes & Tubes for applications requiring dependable welded pipe. Trust USA Piping Solution for quality materials, logistical support, and technical assistance.

What is SA135 GR. B Pipe?

The designation SA135 GR. B Pipe refers to electric resistance welded steel pipe produced in conformance with the specifications outlined in ASME SA135 or its ASTM A135 equivalent. This standard specifically addresses ERW pipe intended for conveying gas, vapor, water, or other liquids. It also finds use in certain mechanical and structural applications where welded pipe is suitable.

Key characteristics defined by this standard and Grade B include:

• Electric Resistance Welded (ERW) Manufacturing: Unlike seamless pipes (like SA106 or SA333), SA135 pipe is formed from steel strip or plate which is rolled into a cylinder, and the longitudinal seam is joined using electric resistance welding without the addition of filler metal. This production method is often highly efficient and cost-effective.
• Grade B Designation: Within the SA135 standard, Grade B specifies a carbon steel with higher Carbon and Manganese content compared to Grade A. This results in Grade B possessing higher minimum tensile and yield strength properties.
• Application Focus: While suitable for conveying fluids at moderate pressures and temperatures, the standard notes that Grade A is better adapted for operations involving close coiling, bending, and flanging due to its lower strength and potentially higher ductility. Grade B is selected when higher strength is a priority.
• Carbon Steel Material: Both grades under SA135 are plain carbon steels, offering good weldability and general utility.

Therefore, engineers and procurement specialists select SA135 Grade B Pipe when they require a cost-effective, readily available ERW steel pipe with enhanced strength characteristics compared to Grade A, suitable for fluid conveyance, general structural use, or mechanical components where the properties of Grade B are advantageous and the limitations of ERW construction are acceptable. It is a common type of SA135 Welded Pipe.

SA135 GR. B Pipe Specifications

Conformance to the technical parameters set forth in ASME SA135 / ASTM A135 is essential for ensuring the proper application and performance of Grade B pipes. USA Piping Solution supplies materials meeting these specific criteria.

Technical Specifications

Property	Description
Governing Standards	ASME SA135 / ASTM A135 (Specification for Electric-Resistance-Welded Steel Pipe).
Grade Designation	Grade B (Gr. B).
Manufacturing Process	Electric Resistance Welding (ERW) is mandatory.
Size Range (Nominal Pipe Size - NPS)	Commonly covers NPS ¼” up to NPS 30”. Availability varies by schedule and specific manufacturer capabilities.
Wall Thickness	Supplied according to standard pipe schedules (e.g., Sch 10, Sch 20, Sch 40/STD, Sch 80/XS) per ASME B36.10M, or specific wall thicknesses as ordered.
Pipe Forms	Predominantly supplied as Round pipe.
End Preparation	Standard options include Plain Ends (PE) suitable for welding or mechanical connectors, Beveled Ends (BE) prepared for butt-welding, and Threaded Ends (TE), typically supplied with couplings.
Lengths	Available in standard Single Random Lengths (SRL ≈ 16-22 ft), Double Random Lengths (DRL ≈ 35-44 ft), or specific cut-to-length requirements.
Dimensional Standard	Dimensions typically conform to ASME B36.10M.
Tolerances	Outside Diameter: Governed by the standard, typically ±1% for NPS 2 and larger. Wall Thickness: Minimum wall thickness shall not be more than 12.5% under the nominal wall thickness specified. Weight: Permissible variation is generally ±10% per length.

Chemical Composition and Mechanical Properties

The performance characteristics of SA135 GR. B Pipes & Tubes, particularly its higher strength compared to Grade A, are directly linked to its specified chemical composition and the resulting mechanical properties achieved through the ERW manufacturing process.

Chemical Composition of SA135 Grade B Pipes(% by Weight)

Grade B allows for higher levels of carbon and manganese, which are key strengthening elements in carbon steel.

Element	Grade B Requirement (%)	Significance in Properties
Carbon (C)	0.30 maximum	Higher allowable carbon contributes significantly to increased strength.
Manganese (Mn)	1.20 maximum	Increased manganese content further enhances strength and hardenability.
Phosphorus (P)	0.035 maximum	Impurity limited to maintain adequate toughness and prevent embrittlement.
Sulfur (S)	0.035 maximum	Impurity restricted for better weldability and material soundness.

This composition differentiates Grade B from the lower carbon/manganese Grade A within the same SA135/A135 standard.

Mechanical Properties of SA135 GR. B Pipes

The standard mandates minimum mechanical properties tested at room temperature to ensure the material meets strength requirements.

Property	Minimum Requirement (Grade B)	Description
Tensile Strength	60,000 psi (415 MPa)	The maximum stress the pipe material can withstand before fracture in tension.
Yield Strength	35,000 psi (240 MPa)	The stress level at which the material begins to deform permanently.
Elongation	Refer to A135 Standard Tables*	A measure of ductility, indicating the ability to stretch before breaking.

Minimum elongation percentages are specified in tables within the ASTM A135 / ASME SA135 standard and vary based on factors like wall thickness and specimen type. Grade B generally requires adequate elongation for its intended applications but may be less ductile than Grade A.

Mandatory Testing Requirements (per A135/SA135):
The standard requires tests to verify material quality and weld integrity:

• Tensile Test: Performed on specimens taken from the pipe body or weld area (depending on size/requirements) to confirm yield strength, tensile strength, and elongation.
• Flattening Test: A section of pipe is compressed between parallel plates to a specified height without cracking, evaluating ductility and weld soundness.
• Hydrostatic Test: Each length of pipe must be pressure tested with water to a specified pressure calculated to induce a certain stress level, ensuring leak tightness and pressure handling capability. NDE may be substituted under certain conditions.
• Hardness Test & Flange Test: While listed in some summaries, these are more explicitly associated with Grade A's suitability for flanging. Grade B's primary focus is strength. Confirm specific test requirements based on the full standard and purchase order.

These tests provide assurance that the SA135 Grade B Pipe meets the necessary strength and integrity benchmarks for its designated service.

Types of SA135 Grade B Pipes & Tubes

The ASTM A135 / ASME SA135 standard specifically covers Electric Resistance Welded (ERW) pipe. Therefore, variations primarily relate to form, end configuration, and surface finish rather than fundamental manufacturing type (like seamless vs. welded).

Property	Description
Manufacturing Method	ERW Pipe: The defining characteristic of SA135. Formed from strip/plate and longitudinally welded using electric resistance. This method is highly efficient for producing standard pipe sizes.
Common Forms	Round Pipe: The standard cylindrical shape governed by ASME B36.10M dimensions, used for fluid transport and various structural/mechanical purposes. (While the base material could potentially be formed into other shapes like square or rectangular, such products would typically fall under different specifications, e.g., ASTM A500 for structural tubing, even if using similar steel chemistry).
End Types	Plain End (PE): Cut square, suitable for welding or use with socket-weld fittings or mechanical couplings. Beveled End (BE): Angled end preparation for facilitating butt-welding in pipeline or process system construction. Threaded and Coupled (T&C): Ends are threaded (typically NPT) and supplied with couplings for mechanical joining, common in lower pressure systems.
Surface Finishes	Black Pipe: Standard mill finish with a light protective oil coating to prevent rust during transit and storage. Hot-Dip Galvanized: Coated with a layer of zinc for enhanced corrosion resistance, suitable for water lines, outdoor structures, or mildly corrosive environments. Other Coatings: Can be supplied with specialized coatings (paint, epoxy, FBE, etc.) for specific corrosion protection or identification needs, usually applied as a secondary process.

When specifying ASME SA135 Tubes or pipes, indicating the desired end type and surface finish is important alongside the size and schedule.

Applications and Industries Served

SA135 GR. B Pipes & Tubes, with their combination of moderate strength, good weldability, and cost-effective ERW manufacturing, are utilized in a variety of applications across several industries:

• General Fluid Conveyance: Suitable for transporting water, gas (at moderate pressures), vapor, air, and other liquids in industrial plants, commercial buildings, and utility systems where the operating conditions are within the material's capabilities.
• Low-to-Medium Pressure Systems: Employed in piping systems where high pressures or extreme temperatures are not factors, leveraging the economic advantage of ERW pipe.
• Structural Applications: Used as structural elements in construction, framework, supports, railings, and general fabrication where the strength of Grade B is sufficient and the ERW construction is acceptable for the design load.
• Mechanical Components: Can serve as rollers, supports, spacers, or housings in machinery and equipment where standard pipe tolerances and properties meet the requirements.
• Fire Protection Systems: Often used (frequently galvanized) in sprinkler systems and fire water lines according to relevant building codes and fire protection standards (e.g., NFPA 13).
• Water Well Casing: Can be used in certain water well applications.

The choice of SA135 Welded Pipe Grade B is typically driven by applications needing a standard, readily available welded carbon steel pipe with strength properties slightly exceeding basic low-carbon grades (like A135 Grade A or A53 Grade A), where seamless construction is not mandated and the forming requirements are not severe.

SA135 GR. B Pipe Size Chart

This chart provides nominal dimensions and estimated weights for common sizes of SA135 GR. B Pipes & Tubes, based on standard ASME B36.10M dimensions. Weights are theoretical.

NPS (in)	OD (in)	Schedule	Wall Thk (in)	Weight (lbs/ft)	Weight ( kg/m )	Notes
1/2"	0.840	40 STD	0.109	0.85	1.27
1/2"	0.840	80 XS	0.147	1.09	1.62
3/4"	1.050	40 STD	0.113	1.13	1.68
3/4"	1.050	80 XS	0.154	1.48	2.20
1"	1.315	40 STD	0.133	1.68	2.50	Common Size
1"	1.315	80 XS	0.179	2.17	3.24
1.5"	1.900	40 STD	0.145	2.72	4.05
1.5"	1.900	80 XS	0.200	3.63	5.40
2"	2.375	40 STD	0.154	3.66	5.44	Common Size
2"	2.375	80 XS	0.218	5.03	7.48
3"	3.500	40 STD	0.216	7.58	11.29
3"	3.500	80 XS	0.300	10.26	15.27
4"	4.500	40 STD	0.237	10.80	16.07	Common Size
4"	4.500	80 XS	0.337	15.00	22.32
6"	6.625	40 STD	0.280	18.99	28.26
6"	6.625	80 XS	0.432	28.60	42.56
8"	8.625	40 STD	0.322	28.58	42.55
8"	8.625	80 XS	0.500	43.43	64.63
12"	12.750	STD	0.375*	49.61*	73.83*	Std Wall Note
12"	12.750	XS	0.500*	65.48*	97.45*	XS Wall Note

Note: STD and XS wall thicknesses may differ from Sch 40 and Sch 80 for NPS 12" and larger. Weights are calculated estimates based on nominal dimensions.

Certifications and Compliance

Verification of adherence to ASME SA135 / ASTM A135 standards is essential for ensuring the quality and suitability of SA135 GR. B Pipes & Tubes. USA Piping Solution ensures materials are provided with appropriate documentation.

• Standard Conformance: All pipe supplied is certified by the manufacturer to meet the requirements stipulated in ASME SA135 / ASTM A135 for Grade B. This includes controls over chemical composition, the ERW manufacturing process, dimensional tolerances, specified mechanical properties (yield, tensile), and successful completion of mandatory testing (flattening, hydrostatic/NDE).
• Mill Test Reports (MTRs) / Certificates of Conformance (CoC): Shipments are typically accompanied by documentation verifying compliance. MTRs provide traceability via heat numbers and report actual chemical analysis and mechanical test results for the specific production lot. CoCs provide a general statement of conformity to the standard.
• ISO 9001 Quality System: Our internal quality management practices align with ISO 9001 standards, ensuring consistent procedures for supplier qualification, material verification, and order handling.
• Standard Markings: Pipes are marked according to the standard's requirements (method varies by size), typically including:
• Manufacturer's name or mark
• Specification (ASTM A135 or ASME SA135) and Grade (B)
• Size (NPS and Schedule/Wall)
• Manufacturing process code (ERW)
• Heat number or traceability code.

This documentation provides the necessary assurance of material quality and compliance for intended applications.

Why Choose USA Piping Solution for SA135 GR. B Pipes?

Selecting a reliable supplier is key to efficient procurement of standard pipe materials like SA135 GR. B Pipes & Tubes. USA Piping Solution offers significant advantages:

• Extensive Inventory Access: We maintain and have access to substantial inventories of common SA135 Grade B pipe sizes and schedules across our US distribution network, facilitating rapid order fulfillment.
• Knowledge of ERW Standards: Our team understands the specifics of the ASME SA135 / ASTM A135 standard, including the characteristics and appropriate applications for Grade B welded pipe.
• Efficient Logistics: Our nationwide distribution capabilities ensure timely and dependable delivery of materials to your location, supporting project schedules.
• Competitive Sourcing: We leverage strong relationships with qualified domestic and international pipe mills to offer competitive pricing on quality materials.
• Quality Assurance: We prioritize sourcing from reputable manufacturers and ensure proper mill certification accompanies all shipments, verifying compliance with standards.
• Value-Added Services: We offer processing services such as cutting pipe to specific lengths, end preparation (beveling/threading if required), and coordination of galvanizing or special coatings.
• Responsive Customer Service: Our sales and support staff are dedicated to providing prompt quotations, accurate information, and efficient handling of all inquiries and orders.

Related Products

USA Piping Solution provides a full range of carbon steel pipes and tubes meeting standards common in the US market, serving various applications:

Choosing the most appropriate standard depends on the specific requirements for pressure, temperature, manufacturing method (seamless vs. welded), dimensional precision, and governing codes for the application. Our team can help clarify these distinctions.

Final Call to Action

For applications requiring dependable, cost-effective SA135 GR. B Pipes & Tubes, leverage the sourcing capabilities and inventory access of USA Piping Solution. We provide certified SA135 Grade B Pipe manufactured via the ERW process, suitable for numerous fluid conveyance, structural, and mechanical roles. Ensure timely delivery and verified quality for your projects by partnering with a knowledgeable national supplier.

Contact USA Piping Solution today to discuss your SA135 GR. B Pipes & Tubes requirements and receive a comprehensive and competitive quotation.

Request Your SA135 Gr. B Pipe Quote Now!